Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, namely, small items of metal hardware in the nature of nuts, pulleys, washers, couplers, caps and pins for use as small connectors, clamps, screws, buckles used to fasten trusses, truss couplers, base plates, spacers, hinges; pipes and tubes of metal; ores; metal pipe couplings; spiral welded steel pipes; plastic-coated spiral welded steel pipes

Apparatus, installations and systems for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes

Rubber, gutta-percha, gum, asbestos, mica; plastics in extruded form for use in further manufacturing; packing, stopping and insulating materials; flexible pipes and tubes, not of metal; non-metallic pipes and tubes; non-metallic couplings for tubes; thermoplastics in the nature of coatings for pipes, tubes and hoses

[ Building construction; ] services consisting of the rental of construction tools and building equipment; repair or maintenance, namely, repair and maintenance of buildings and building material, small items of metal hardware, pipes and tubes of metal, ores, metal pipe couplings and spiral welded steel pipes, flexible pipes and tubes, not of metal, non-metallic pipes and tubes, non-metallic couplings for tubes, plastic-coated spiral welded steel pipes; installation services, namely, installation of buildings and building material, small items of metal hardware, pipes and tubes of metal, ores, metal pipe couplings and spiral welded steel pipes, flexible pipes and tubes, not of metal, non- metallic pipes and tubes, non-metallic couplings for tubes, plastic-coated spiral welded steel pipes

Services in the nature of chopping, cutting, shearing, polishing and grinding of hoses and tubes and of their parts and accessories; metal and plastic coating of hoses and tubes and their parts and accessories

Scientific and technological services and research and design relating thereto in the field of common metals and their alloys, metal building materials, transportable buildings of metal, materials of metal for railway tracks, non-electric cables and wires of common metal, small items of metal hardware, pipes and tubes of metal, ores, metal pipe couplings, spiral welded steel pipes, plastic-coated spiral welded steel pipes, apparatus, installations and systems for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply, sanitary purposes and hoses, tubes and pipe systems for transport of media, rubber, gutta-percha, gum, asbestos, mica, plastics in extruded form for use in further manufacturing, packing, stopping and insulating materials, flexible pipes and tubes, not of metal, non-metallic pipes and tubes, non-metallic couplings for tubes, thermoplastics in the nature of coatings for pipes, tubes and hoses; technical analysis and research services, in the field of common metals and their alloys, metal building materials, transportable buildings of metal, materials of metal for railway tracks, non-electric cables and wires of common metal, small items of metal hardware, pipes and tubes of metal, ores, metal pipe couplings, spiral welded steel pipes, plastic-coated spiral welded steel pipes, apparatus, installations and systems for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply, sanitary purposes and hoses, tubes and pipe systems for transport of media, rubber, gutta-percha, gum, asbestos, mica, plastics in extruded form for use in further manufacturing, packing, stopping and insulating materials, flexible pipes and tubes, not of metal, non-metallic pipes and tubes, nonmetallic couplings for tubes, thermoplastics in the nature of coatings for pipes, tubes and hoses; engineering and research design and development of industrial products in the field of common metals and their alloys, metal building materials, transportable buildings of metal, materials of metal for railway tracks, non-electric cables and wires of common metal, small items of metal hardware, pipes and tubes of metal, ores, metal pipe couplings, spiral welded steel pipes, plastic-coated spiral welded steel pipes, apparatus, installations and systems for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply, sanitary purposes and hoses, tubes and pipe systems for transport of media, rubber, gutta-percha, gum, asbestos, mica, plastics in extruded form for use in further manufacturing, packing, stopping and insulating materials, flexible pipes and tubes, not of metal, non-metallic pipes and tubes, non-metallic couplings for tubes, thermoplastics in the nature of coatings for pipes, tubes and hoses; evaluations, testing or technical estimates, research and reports in the scientific and technological fields and technological consultancy in the field of common metals and their alloys, metal building materials, transportable buildings of metal, materials of metal for railway tracks, non-electric cables and wires of common metal, small items of metal hardware, pipes and tubes of metal, ores, metal pipe couplings, spiral welded steel pipes, plastic-coated spiral welded steel pipes, apparatus, installations and systems for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply, sanitary purposes and hoses-, tubes- and pipe systems for transport of media, rubber, gutta-percha, gum, asbestos, mica, plastics in extruded form for use in further manufacturing, packing, stopping and insulating materials, flexible pipes and tubes, not of metal, non-metallic pipes and tubes, non-metallic couplings for tubes, thermoplastics in the nature of coatings for pipes, tubes and hoses; designing of hoses and tubes and of their parts and accessories